That Vexing Vapor Venting (Vapor Coming out of Vents)
August 18, 2024
You may have noticed sometimes on a hot and humid day, vapor will come out of your vehicle's vents when you have the air conditioning on. Is that something to be concerned about? Well, it depends.
Sometimes that steam or vapor can be caused by water accumulating in the vent system after it has condensed. And sometimes water can pool at the bottom of a vent. When you turn on the blower mower, the air hits the water and may create steam or vapor that you can see in the cabin.
One thing to check is if that vapor smells like anything. If it doesn't, that's a good sign. You may be able to run the fan for a while and the issue may just go away when things dry out. But moisture collecting in the ventilation hoses in a hot vehicle may be a breeding ground for mold, and that can have health consequences.
There's another possibility. Ventilation systems often have drains to get rid of any accumulated water, and debris can sometimes clog them. A technician can clean out those drains and you'll be back in business.
One thing to nose around for is a sweet smell coming out of your vents. Sometimes the heater core (a component of your vehicle's heater system) can develop very tiny holes. That sweet smell may be coolant that's been vaporized by those tiny holes entering your cabin.
It's always a good thing to mention to your service advisor any abnormality you're seeing—or smelling—in your vehicle. By venting a little about your vents, a technician can get to the bottom of the problem before it starts "clouding" the issue.
TLC Custom Exhaust Brakes & Tires
1735 N Main St
Royal Oak, Michigan 48067
248-541-8300
http://www.tlcautocareroyaloak.com
Need Service?
More articles from TLC Auto Care

Idle Talk about Engines (Causes of Rough Engine Idling)
June 9, 2025
When you slow down at stoplight, your vehicle's idle should be smooth as silk. But what happens when the engine is missing or idling roughly? That's your engine's way of telling you, "Hey, I've got something wrong with me and if you don't get someone to find out what it is, I may not start the n... More

Full Stop (Brake Master Cylinder Replacement)
June 2, 2025
When you step on your brake pedal, you want to feel confident that your vehicles going to stop. If your brakes arent working right, its a risk to your safety and the safety of others on the road. After all, youre driving a machine that weighs thousands of pounds, and you have to be able to stop... More

Light's Out! Trouble Ahead (Exterior Light Bulb Service)
May 25, 2025
Whether or not your exterior light bulbs are all working probably is not at the top of your list when you think about your vehicle. But those exterior lights are more important than you think, and they're vital to your safety and that of other drivers near you. Headlights are important. Not onl... More